Fix docstring markup in sage/manifolds

[kwankyu]

Part of #34157:

sage/manifolds/topological_submanifold.py:346:1: RST214 Inline literal start-string without end-string.
sage/manifolds/topological_submanifold.py:362:1: RST301 Unexpected indentation.
sage/manifolds/topological_submanifold.py:363:1: RST201 Block quote ends without a blank line; unexpected unindent.
sage/manifolds/topological_submanifold.py:369:1: RST301 Unexpected indentation.
sage/manifolds/topological_submanifold.py:371:1: RST201 Block quote ends without a blank line; unexpected unindent.
sage/manifolds/topological_submanifold.py:373:1: RST301 Unexpected indentation.
sage/manifolds/topological_submanifold.py:375:1: RST203 Definition list ends without a blank line; unexpected unindent.
sage/manifolds/subset.py:2069:1: RST214 Inline literal start-string without end-string.
sage/manifolds/chart.py:479:1: RST214 Inline literal start-string without end-string.
sage/manifolds/chart.py:479:1: RST214 Inline literal start-string without end-string.
sage/manifolds/manifold.py:906:1: RST214 Inline literal start-string without end-string.
sage/manifolds/differentiable/integrated_curve.py:2113:1: RST214 Inline literal start-string without end-string.
sage/manifolds/differentiable/degenerate_submanifold.py:699:1: RST399 Content block expected for the "MATH" directive; none found.
sage/manifolds/differentiable/degenerate_submanifold.py:702:1: RST219 Inline substitution_reference start-string without end-string.
sage/manifolds/differentiable/manifold.py:854:1: RST214 Inline literal start-string without end-string.

CC: @egourgoulhon

Component: documentation

Author: Frédéric Chapoton

Branch/Commit: b531034

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/34158

[kwankyu]

Description changed:

--- 
+++ 
@@ -1,3 +1,4 @@
+Part of #34157:
 
 ```
 sage/manifolds/topological_submanifold.py:346:1: RST214 Inline literal start-string without end-string.

[fchapoton]

Author: Frédéric Chapoton

[fchapoton]

comment:2

done and checked

---

New commits:

5a97eeb

rst fixes in manifolds

[fchapoton]

Branch: u/chapoton/34158

[fchapoton]

Commit: 5a97eeb

[mkoeppe]

comment:4

             sage: O.embedding()
-            Continuous map
-             from the Open subset O of the 2-dimensional topological submanifold N
-              embedded in the 3-dimensional topological manifold M
-             to the 3-dimensional topological manifold M
+            Continuous map from the Open subset O
+            of the 2-dimensional topological submanifold N
+            embedded in the 3-dimensional topological manifold M
+            to the 3-dimensional topological manifold M

These indentations are intentional, to indicate nested structure

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

b531034

rst fixes in manifolds

[sagetrac-git]

Changed commit from 5a97eeb to b531034

[fchapoton]

comment:6

ok, fixed and checked